´

Power Register

Current Register

I C

2

Interface

Voltage Register

INA231

GND

BUS

ADC

V

I

A0

A1

ALERT

SDA

SCL

C

0.1 F

BYPASS

m

High-

Side

Shunt

Low-

Side

Shunt

Load

Alert Register

V

(Supply Voltage)

S

Power Supply

(0 V to 28 V)

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Folder

Order

Now

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Documents

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Software

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

INA231

SBOS644B – FEBRUARY 2013 – REVISED AUGUST 2017

INA231 High- or Low-Side Measurement, Bidirectional Current and Power Monitor

1

1 Features

1

•

Bus Voltage Sensing From 0 V to 28 V

•

High- or Low-Side Sensing

•

Current, Voltage, and Power Reporting

•

High Accuracy:

–

0.5% Gain Error (Max)

–

50-μV Offset (Max)

•

Configurable Averaging Options

•

Programmable Alert Threshold

•

•

Power-Supply Operation: 2.7 V to 5.5 V

•

Packages: 1.68-mm × 1.43-mm, WCSP-12

–

Low Profile, 0.4-mm Height (YFD Package)

2 Applications

•

Smartphones

•

Tablets

•

Servers

•

Computers

•

Power Management

•

Battery Chargers

•

Power Supplies

•

Test Equipment

3 Description

The INA231 is a current-shunt and power monitor

programmable addresses. The INA231 monitors both

shunt

voltage

drops

and

bus

supply

voltage.

Programmable calibration value, conversion times,

and averaging combined with an internal multiplier

enable direct readouts of current in amperes and

power in watts.

The INA231 senses current on buses that vary from 0

V to 28 V, with the device powered from a single 2.7-

V to 5.5-V supply, drawing 330 μA (typical) of supply

current. The INA231 is specified over the operating

temperature range of –40°C to +125°C.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

INA231

YFF (DSBGA-12)

1.645 mm x 1.388

mm x 0.625 mm

YFD (DSBGA-12)

1.645 mm x 1.388

mm x 0.400 mm

(1) For all available packages, see the package option addendum

at the end of the datasheet.

High-or Low-Side Sensing